基于变结构模式的宽负载恒压感应耦合电能传输系统

为解决感应耦合电能传输(ICPT)系统受扰动和负载电阻变化较大情况下电压不稳定问题,研究了两种类型拓扑结构的能效关系,分析了并联—串联(PS)和串联—串联(SS)型拓扑结构的输出电压、输出功率、输出效率和频率稳定性以及负载适应能力。基于变结构模式给出了对于不同类型负载,应用不同拓扑结构的方案。对切换条件进行了详细分析,给出了保证切换安全有效的方案。为了验证变结构模式的有效性,采用两种差距极大的负载,分别在电压型和电流型ICPT系统下测量其输出电压。实验结果表明,变补偿结构模式适用于ICPT系统的宽负载恒压控制。

Constant-voltage Inductively Coupled Power Transfer System with Wide Load Range Based on Variable Structure Mode

To solve the problem of unstable output voltage of inductively coupled power transfer system (ICPT) subject to disturbance or great load changes, the energy and efficiency of two different compensation topology structures are studied. The output voltage, output power, output efficiency, frequency stability, and load adaptability of the parallel-series (PS) topology and the series-series (SS) topology are also dealt with. Based on the variable structure mode, the method employing different topologies for different loads is given. The switching prerequisite is analyzed in detail and the methods of ensuring safety and effectiveness of switching are recommended. In order to validate the effectiveness of the variable structure mode, two greatly different loads are adopted with their output voltage measured in voltage and current mode ICPT system, respectively. The results show that the variable structure mode is suitable for constant-voltage ICPT system whose load is greatly changed. This work is supported by National Natural Science Foundation of China (No. 51277192).